Center joint and dowel bar holder



Jan. 18 192 7.

L. SAYLES CENTER JOINT AND DOWEL BAR. HOLDER Filed August 11. 1926Inventor loans f1 Jay/a9, 1

' Alttorney Ill Patented Jan. 18, 1 927.

UNITED STATES 1,614,495 PATENT OFFICE.

LOUIS FRANCIS SAYLES, OF BBOOKFIELD, MISSOURI.

CENTER JOINT AND DOWEL BAR HOLDER.

Application filed Augnst 11, 1926. Serial No. 128,695.

The present invention relates to a center jointand dowel bar holder andhas for its principal object to materially assist 1n the building ofconcrete roads. It is the custom at the present time in the constructionof concrete roads to use a deformed steel joint through the center ofthe road; The present deviceis for the purpose of holding this de formedsteel center strip absolutely straight and solid and also to hold thedowel bars in place. The dowel bar is a short rod used to tie togetherthe two sides of the concrete slab which is cut in two by the deformedsteel center strip.

Another very important object ofthe invention lies in the provision of adevice of this nature which is easy to set in place and remove from theconcrete after it has performed its-function.

Another very important object of the invention lies in the provision ofa device of this nature which is exceedingly simple in its construction,inexpensive to manufacture, strong and durable, and otherw se welladapted to the purpose for which 1t is designed. f A With the above andnumerous other objects-in view as will appear as the descriptionproceeds, the invention resides in certain novel features ofconstruction, and in the combination and arrangement of parts as will behereinafter more fully described and claimed.

In the drawing:

Figure 1 is an elevation of the holder embodying the features of myinvention,

Figure 2 is another elevation thereof taken at right angles to thatshown in Figure 1.

Referring to the drawing in detail it will be seen that the holder is ofa substantially inverted U-shaped formation and includes the legs 5 andthe bight portion 6. A shank 7 extends from the center of the bightpor-' tion 6 perpendicularly thereto and in opposite direction from thelegs 5 and isslightly offset as-to the plane in which the-blght portion6 and the legs 5 are disposed. The upperend of this shank 7 terminatesin a large.

head 8. The lower end of the shank 7 7 merges into an elongated spike9,,mucli lon er thanj the legs 5 as clearly indicated in the firing. f

e legs 5 and the spike -9 are preferably sharpened so as toeasllyjpierce the ground. Reinforcin webs 10 are formed The terminals ofintegrally with the big t ortion fi and'the legs 5 and reinforcin we 11are. l

integral with the bight portion 6 and the shank 7. A pin 12 pierces anopening in the head 8. The intermediate portions of the legs 5 areprovided with invertedor downwardly disposed hooks 14. Adjacent thelower end of the legs 5 there are formed enlargements 15 which providestop shoulders 16.

The letter A denotes a common form of steel joint which has alongitudinal centerdeformed portion indicated bythe numeral 17 andprovided with openings 18 which register with each other for receivingthe vertical spike 9 and an openin 19 for receiving the dowel bars 20 wich extend transversely of the deformed steel joint. This steel jointand the dowel bar are well known in this art. It will be seen that thehooks 14 engage the dowel bar and hold it horizontally. The spike 9 andthe lower end of the legs 5 as clearly indicated in Fig. 1, are driveninto the ground and rigidly hold the deformed steel joint and dowel barWhile the custom ,to fill in the space between the joint and the side ofthe form so that considerable strain is imparted to the steel joint.This steel joint under these circumstances is prevented from topplingover since the concrete in the one side space assists in preventingdisplacement of the holder becauseof the enlargement 15 embeddedtherein. As soon as both the sides of the steel joint have been filledup the holder is removed, the head 8 and pin 12 being provided to allowthe removal to be made easy by the use of suitable implements if this isnecessary. In actual practice, however, it is thought unnecessary to usethe implements as the head may be grasped by the'hand or the pin may begrasped by the hand and the holder pulled out of the relatively softconcrete.

It is thought that the construction, utility, and the advantages of thisinvention will now be clearly understood by those skilled in 'this'artwithout a more-detailed description thereof. The present embodiment ofthe invention has been disclosed in detail merely by way of examplesince in actual "practice it attains the features of advantageenumerated as desirable in the statement of the invention in the abovedescription. It

will be apparent that numerous changes in the details of construction,in the sizes, pro

portions of the parts, in the materials, and 1n the combination andarrangements of parts may be resorted to without departing from thespirit or scope of the invention hereinafter claimed or" sacrificing anyof its advantages.

Having thus described my invention what I claim as new is:

LA device of the class described including an inverted U-shaped body toprovide a bight and a pair of legs, and a spike projecting from theintermediate bight portion in the same direction with the legs, saidspike being disposed out of the plane of the U-shaped body, the upperend of the spike merging into a shank, said shank terminating in a head,reinforcing Webs between the shank and the bight portion and between thebight ort-ion and the legs, the legs being provi ed intermediate theirends with downwardly projecting hooks.

2. A device of the class described including an inverted U-shaped bodyto provide a bight and a pair of legs, and a spike projecting from theintermediate bight portion in the same direction with the legs, saidspike being disposed out of the plane of the U- shaped body, the upperend of the spike merging into a shank, said shank terminating in a head,reinforcing webs between the shank and the bight portion and between thebi ht portion and the legs, the legs being provided intermediate theirends with downwardly projecting hooks, these legs beingprovided adjacenttheir ends with enlargements.

3. A device of the class described including an inverted U-shaped bodyto provide a bight and a pair of legs, and a spike projecting from theintermediate bight portion in the same direction with the legs, saidspike being disposed out of the plane of the U- shaped body, each legbeing provided intermediate its ends with a downwardly projecting hook.

4. A device of the class described including an inverted U-shaped bodyto provide a bight and a pair of legs, and a spike projecting from theintermediate bight portion in the same direction with the legs, saidspike being disposed out of the plane'of the U- shaped body, each legbeing provided intermediate its ends with a downwardly projecting hook,each leg being provided adjacent its extremity with an enlargement.

5. A device of the class described including an inverted U-shaped bodyto provide a bight and a pair of legs, and a spike projecting from theintermediate blght portion in the same direction with 'the legs, saidbight being disposed out ofthe plane of the U- shaped body, and-means onsaid legs for engaging over a dowel bar.

n testimony whereof I afiix my signature.

LOUIS F. SAYLEISF

